During developmental test of the Strike Talon weapon system, the Flight Stress Computer (FSC) demonstrated a Mean Time Between Failure (MTBF) of 700 hours; the predicted MTBF was 1,588 hours. What are two reasons that meeting reliability goals are important from an O&S cost perspective? Select two Reliability is a mandatory key system attribute and does not impact O&S cost Frequent failures drive large spare parts inventories and increase O&S costs The increase in maintenance man hours to remove/replace unserviceable FSCs will increase O&S costs Reliability improvements as a result of DT are an RDT&E expenditure and will not impact O&S costs throughout the life cycle